2 * DCA compatible decoder
3 * Copyright (C) 2004 Gildas Bazin
4 * Copyright (C) 2004 Benjamin Zores
5 * Copyright (C) 2006 Benjamin Larsson
6 * Copyright (C) 2007 Konstantin Shishkov
7 * Copyright (C) 2016 foo86
9 * This file is part of FFmpeg.
11 * FFmpeg is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
16 * FFmpeg is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with FFmpeg; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
31 #include "libavutil/common.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/intreadwrite.h"
36 DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R, DCA_SPEAKER_Ls,
37 DCA_SPEAKER_Rs, DCA_SPEAKER_LFE1, DCA_SPEAKER_Cs, DCA_SPEAKER_Lsr,
38 DCA_SPEAKER_Rsr, DCA_SPEAKER_Lss, DCA_SPEAKER_Rss, DCA_SPEAKER_Lc,
39 DCA_SPEAKER_Rc, DCA_SPEAKER_Lh, DCA_SPEAKER_Ch, DCA_SPEAKER_Rh,
40 DCA_SPEAKER_LFE2, DCA_SPEAKER_Lw, DCA_SPEAKER_Rw, DCA_SPEAKER_Oh,
41 DCA_SPEAKER_Lhs, DCA_SPEAKER_Rhs, DCA_SPEAKER_Chr, DCA_SPEAKER_Lhr,
42 DCA_SPEAKER_Rhr, DCA_SPEAKER_Cl, DCA_SPEAKER_Ll, DCA_SPEAKER_Rl,
43 DCA_SPEAKER_RSV1, DCA_SPEAKER_RSV2, DCA_SPEAKER_RSV3, DCA_SPEAKER_RSV4,
49 DCA_SPEAKER_MASK_C = 0x00000001,
50 DCA_SPEAKER_MASK_L = 0x00000002,
51 DCA_SPEAKER_MASK_R = 0x00000004,
52 DCA_SPEAKER_MASK_Ls = 0x00000008,
53 DCA_SPEAKER_MASK_Rs = 0x00000010,
54 DCA_SPEAKER_MASK_LFE1 = 0x00000020,
55 DCA_SPEAKER_MASK_Cs = 0x00000040,
56 DCA_SPEAKER_MASK_Lsr = 0x00000080,
57 DCA_SPEAKER_MASK_Rsr = 0x00000100,
58 DCA_SPEAKER_MASK_Lss = 0x00000200,
59 DCA_SPEAKER_MASK_Rss = 0x00000400,
60 DCA_SPEAKER_MASK_Lc = 0x00000800,
61 DCA_SPEAKER_MASK_Rc = 0x00001000,
62 DCA_SPEAKER_MASK_Lh = 0x00002000,
63 DCA_SPEAKER_MASK_Ch = 0x00004000,
64 DCA_SPEAKER_MASK_Rh = 0x00008000,
65 DCA_SPEAKER_MASK_LFE2 = 0x00010000,
66 DCA_SPEAKER_MASK_Lw = 0x00020000,
67 DCA_SPEAKER_MASK_Rw = 0x00040000,
68 DCA_SPEAKER_MASK_Oh = 0x00080000,
69 DCA_SPEAKER_MASK_Lhs = 0x00100000,
70 DCA_SPEAKER_MASK_Rhs = 0x00200000,
71 DCA_SPEAKER_MASK_Chr = 0x00400000,
72 DCA_SPEAKER_MASK_Lhr = 0x00800000,
73 DCA_SPEAKER_MASK_Rhr = 0x01000000,
74 DCA_SPEAKER_MASK_Cl = 0x02000000,
75 DCA_SPEAKER_MASK_Ll = 0x04000000,
76 DCA_SPEAKER_MASK_Rl = 0x08000000,
79 #define DCA_SPEAKER_LAYOUT_MONO (DCA_SPEAKER_MASK_C)
80 #define DCA_SPEAKER_LAYOUT_STEREO (DCA_SPEAKER_MASK_L | DCA_SPEAKER_MASK_R)
81 #define DCA_SPEAKER_LAYOUT_2POINT1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_LFE1)
82 #define DCA_SPEAKER_LAYOUT_3_0 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_C)
83 #define DCA_SPEAKER_LAYOUT_2_1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Cs)
84 #define DCA_SPEAKER_LAYOUT_3_1 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Cs)
85 #define DCA_SPEAKER_LAYOUT_2_2 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs)
86 #define DCA_SPEAKER_LAYOUT_5POINT0 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs)
87 #define DCA_SPEAKER_LAYOUT_5POINT1 (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_LFE1)
88 #define DCA_SPEAKER_LAYOUT_7POINT0_WIDE (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_Lw | DCA_SPEAKER_MASK_Rw)
89 #define DCA_SPEAKER_LAYOUT_7POINT1_WIDE (DCA_SPEAKER_LAYOUT_7POINT0_WIDE | DCA_SPEAKER_MASK_LFE1)
91 #define DCA_HAS_STEREO(mask) \
92 ((mask & DCA_SPEAKER_LAYOUT_STEREO) == DCA_SPEAKER_LAYOUT_STEREO)
95 DCA_SPEAKER_PAIR_C = 0x0001,
96 DCA_SPEAKER_PAIR_LR = 0x0002,
97 DCA_SPEAKER_PAIR_LsRs = 0x0004,
98 DCA_SPEAKER_PAIR_LFE1 = 0x0008,
99 DCA_SPEAKER_PAIR_Cs = 0x0010,
100 DCA_SPEAKER_PAIR_LhRh = 0x0020,
101 DCA_SPEAKER_PAIR_LsrRsr = 0x0040,
102 DCA_SPEAKER_PAIR_Ch = 0x0080,
103 DCA_SPEAKER_PAIR_Oh = 0x0100,
104 DCA_SPEAKER_PAIR_LcRc = 0x0200,
105 DCA_SPEAKER_PAIR_LwRw = 0x0400,
106 DCA_SPEAKER_PAIR_LssRss = 0x0800,
107 DCA_SPEAKER_PAIR_LFE2 = 0x1000,
108 DCA_SPEAKER_PAIR_LhsRhs = 0x2000,
109 DCA_SPEAKER_PAIR_Chr = 0x4000,
110 DCA_SPEAKER_PAIR_LhrRhr = 0x8000
114 * Return number of individual channels in DCASpeakerPair mask
116 static inline int ff_dca_count_chs_for_mask(unsigned int mask)
118 return av_popcount((mask & 0xffff) | ((mask & 0xae66) << 16));
121 enum DCARepresentationType {
122 DCA_REPR_TYPE_LtRt = 2,
123 DCA_REPR_TYPE_LhRh = 3
126 enum DCAExtensionMask {
127 DCA_CSS_CORE = 0x001,
128 DCA_CSS_XXCH = 0x002,
131 DCA_CSS_MASK = 0x00f,
132 DCA_EXSS_CORE = 0x010,
133 DCA_EXSS_XBR = 0x020,
134 DCA_EXSS_XXCH = 0x040,
135 DCA_EXSS_X96 = 0x080,
136 DCA_EXSS_LBR = 0x100,
137 DCA_EXSS_XLL = 0x200,
138 DCA_EXSS_RSV1 = 0x400,
139 DCA_EXSS_RSV2 = 0x800,
140 DCA_EXSS_MASK = 0xff0,
143 enum DCADownMixType {
155 extern av_export const uint32_t avpriv_dca_sample_rates[16];
157 extern const uint32_t ff_dca_sampling_freqs[16];
158 extern const uint8_t ff_dca_freq_ranges[16];
161 * Convert bitstream to one representation based on sync marker
163 int avpriv_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
166 #endif /* AVCODEC_DCA_H */